First story is about the student and professor with a calm and collected attitude but has a super kink lol, they're just literally flirting and he's kinda respectful because he waited for the student until he can insert his invisible D on his ax*. The second story is about the yakuza step brothers, kinda cherry blossom after winter but in Yakuza theme.
Gozen 0 Ji no Ookami Koushi